adjective / verb / preposition / adverb
round
ROUND/raʊnd/
Following or forming a complete circle.
The orange is round, and so is the plate.

Etymology
Latin rotundus describes something wheel-like and is related to rota, “wheel.” That image connects directly with the circular outline in the English sense, which also covers spherical shapes.
In context
They would have had a lattice structure, a wood lattice structure, over it in a round dome shaped like a little igloo
More examples
- He rounds the wooden edges with sandpaper.
- We gather round the campfire every evening.
- The wheels go round as she pedals.
Forms
round · rounder · roundest · rounds · rounded · rounding
roundness noun — The quality of being circular or spherical.